I strongly suspect that this printer is one of those that requires most of the "heavy lifting" to be done by the computer's CPU rather than being able to do the work itself. As such it is very unlikely that this will work on the ARM CPU in the Bubba.

Also, the scanner part is even less likely to work as the Bubba has a print server, but no scanning software.

The problem is not so much the speed, but having a version of the driver code that will run on an ARM. If the driver were available in source you could recompile it for ARM (assuming that you also had all the appropriate graphics libraries etc.) but it is very unlikely that a company like Lexmark would allow the source for such a driver to be released as it would give an unfair advantage to their competitors. The printer itself is very simple, all that is "special" about it is in the driver!